Actresses-singers AJ Michalka (L) and Aly Michalka attend the 5th Annual ELLE Women in Music Celebration presented by CUSP by Neiman Marcus. Hosted by ELLE Editor-in-Chief Robbie Myers with performances by Sarah McLachlan, Angel Haze and Betty Who, with special DJ set by Rumer Willis at Avalon on April 22, 2014 in Hollywood, California.